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Old 12-10-2002, 01:21 AM
H2-T2 H2-T2 is offline
 
Join Date: Nov 2002
Location: Monongahela, PA
Posts: 61
H2-T2 is off the scale
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I have dealer installed, 18 inch wheels and tires. I have noticed that the tires, (Nitto) are 32.99 in. diameter. The stock Hummer tires are 34.5. On a recent trip that is exactly 684 miles, my odometer registered 720 miles. My question is, how is the speedometer recalibrated? Is it a simple matter of the dealer getting into the computer and changing the settings? It is also throwing my speedometer off by about 4 miles at 70 miles per hour. Thanks for any advice. Gary.
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